Lady Gaga claims that she's been betrayed and has apologised to her fans for the delay in releasing her video for her song Do What U Want.

The 27-year-old star has hit out at ''mismanagement'' which left her without enough time to shoot a video for the track.

Writing on her Little Monsters website, she said: ''It is late because, just like with the Applause video unfortunately, I was given a week to plan and execute it. It is very devastating for someone like me, I devote every moment of my life to creating fantasies for you.

''All my most successful videos were planned over a period of time when I was rested and my creativity was honored.

''Those who have betrayed me gravely mismanaged my time and health and left me on my own to damage control any problems that ensued as a result.

''Millions of dollars are not enough for some people. They want billions. Then they need trillions. I was not enough for some people. They wanted more.

''I am very grateful to the photographers and designers who have always stood by me to make sure my fans are never aware of the things that happen behind the scenes, but unfortunately after my surgery I was too sick, too tired, and too sad to control the damage on my own. My label was not aware that this was going on.''

Gaga added: ''The next few months of ARTPOP will truly be its beginning. Because those who did not care about ARTPOP's success are now gone, and the dreams I have been planning can now come to fruition.''

She also asked fans to give her a chance and open their hearts so they can become ''stronger as a unit'', adding: ''Let me be for you the Goddess that I know I truly am, let me show you the visions that have been in my mind for two years.